Journal of Forest Science, 2017 (vol. 63), issue 7

Analysis of performance of the forestry sector in the Czech and Slovak RepublicsOriginal Paper

Andrea SUJOVÁ, Jakub MICHAL

J. For. Sci., 2017, 63(7):293-299 | DOI: 10.17221/120/2016-JFS  

The forestry sector provides several social and economic benefits to the whole economy. It is based on the sustainable management of renewable natural resources and production of raw wood. It is therefore able of sustainable growth. The interest of the European Union is to build economy based on renewable natural resources, resulting in the need to pay increased attention to the development and support of the forestry. The aim of the paper is to evaluate the performance of forestry sector in the Czech and Slovak Republics for a period of five years. System of indicators measuring sectorial performance was set up to reach the goal. Obtained results...

Estimation of the value of forest ecosystem services to develop conservational strategy management (strengths, weaknesses, opportunities and threats)Original Paper

Komeil JAHANIFAR, Hamid AMIRNEJAD, Zahra ABEDI, Alireza VAFAEINEJAD

J. For. Sci., 2017, 63(7):300-312 | DOI: 10.17221/137/2016-JFS  

Forests ecosystems provide several undisputable benefits which policy-makers blink since these values do not record in conventional markets or are difficult to measure. This paper indicates that the annual value of the ecosystem services such as water conservation, soil protection, carbon fixation, nutrient cycling, water purification, air pollution absorption and recreation provided by forests is not only worth millions of dollars, but also in per hectare terms much more than hitherto known. After estimating the value of ecosystem services, results are available to policy-makers and experts at a brainstorming and by using SWOT, conservational strategies...

Transpiration and water potential of young Quercus petraea (M.) Liebl. coppice sprouts and seedlings during favourable and drought conditionsOriginal Paper

Marko STOJANOVIĆ, Justyna SZATNIEWSKA, Ina KYSELOVÁ, Radek POKORNÝ, Matjaž ČATER

J. For. Sci., 2017, 63(7):313-323 | DOI: 10.17221/36/2017-JFS  

Increased frequency and intensity of drought events consequently affect oak high forests with the process of further decline, compromised growth and questionable natural regeneration. To overcome such difficulties, new adaptive strategies are required. Coppicing, as the oldest way of forest management, might provide some solutions. In our study two contrasting management systems, sessile oak coppice and high forest, were compared at the initial stages of regeneration and forest development. The transpiration of young oak sprouts and seedlings was monitored using sap flow systems during the 2015 growing season. The study of transpiration also included...

Time consumption and productivity of a forwarder operating on a slope in a cut-to-length harvest system in a Pinus radiata D. Don pine plantationOriginal Paper

Martin STRANDGARD, Rick MITCHELL, Mauricio ACUNA

J. For. Sci., 2017, 63(7):324-330 | DOI: 10.17221/10/2017-JFS  

Time consumption and productivity of a Valmet 890.3 8 wheel forwarder were evaluated on an Australian radiata pine clearfell site with a slope of 21 to 45% (12 to 24°). Cycle time was significantly related to extraction distance. Productivity was significantly related to extraction distance and load volume. Slope did not have a significant effect on cycle time or productivity. Productivity was considerably greater than that for many published studies, which was likely to have been the result of many factors at the study site affecting load sizes and cycle times, including the large load capacity of the studied forwarder, larger mean log volumes, larger...

The effect of slow-release fertilizers on the soil environment of spread windrows in the Krušné Hory Mts.Original Paper

Jan PECHÁČEK, Dušan VAVŘÍČEK, Aleš KUČERA, Peter DUNDEK

J. For. Sci., 2017, 63(7):331-338 | DOI: 10.17221/31/2017-JFS  

The current revitalization of forest ecosystems in the Krušné Hory Mts. is carried out through: (i) spreading line windrows, (ii) chemical amelioration. The aim of this research consisted in: (i) assessing basic pedochemical characteristics of spread windrows, (ii) testing the effect of slow-release fertilizers from the Silvamix^® series and dolomitic limestone on the root ball zone soil five years after application. The results of this study suggest that spread windrows are a suitable environment for forest species: with the only risk being extremely low P concentrations. Our results further show an...